<template>
<div>
      <!--面包屑导航区-->
        <el-breadcrumb separator="/">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>添加商品</el-breadcrumb-item>
</el-breadcrumb>
  <el-card >
      <el-alert
    title="添加商品信息"
    center
    :closable="false"
    type="info"
    show-icon>
  </el-alert>
  <el-steps :space="200" :active="activeIndex  - 0" finish-status="success" align-center>
  <el-step title="基本信息"></el-step>
  <el-step title="商品参数"></el-step>
  <el-step title="商品属性"></el-step>
<el-step title="商品图片"></el-step>
  <el-step title="商品内容"></el-step>
  <el-step title="完成"></el-step>
</el-steps>
<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
  <el-tabs :tab-position="tabPosition" v-model="activeIndex" :before-leave="beforeTabsLeave" @tab-click="tabClicked" >
    <el-tab-pane label="基本信息" name="0">
        <el-form-item label="商品名称" prop="goods_name">
    <el-input v-model="addForm.goods_name"></el-input>
  </el-form-item>
          <el-form-item label="商品价格" prop="goods_price">
    <el-input v-model="addForm.goods_price" type="number"></el-input>
  </el-form-item>
          <el-form-item label="商品重量" prop="goods_weight">
    <el-input v-model="addForm.goods_weight" type="number"></el-input>
  </el-form-item>
          <el-form-item label="商品数量" prop="goods_number">
    <el-input v-model="addForm.goods_number" type="number"></el-input>
  </el-form-item>
         <el-form-item label="商品分类" prop="goods_cat">
     <el-cascader
            v-model="addForm.goods_cat"
            :options="cateList"
            expandTrigger="hover"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
  </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品参数" name="1">
    <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
          <el-checkbox-group v-model="item.attr_vals">
    <el-checkbox border :label="cb" v-for="(cb, i) in item.attr_vals" :key="i"></el-checkbox>

  </el-checkbox-group>
  </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
    <el-input v-model="item.attr_vals"></el-input>
  </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品图片" name="3">
        <el-upload
  :action="uploadUrl"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  list-type="picture"
  :headers="headObj"
  :on-success="handleSuccess">
  <el-button size="small" type="primary">点击上传</el-button>
</el-upload>
    </el-tab-pane>
    <el-tab-pane label="商品内容" name="4">
       <quill-editor
       v-model="addForm.goods_introduce"
      ></quill-editor>
      <el-button type="primary" class="btnAdd"  @click="add">添加商品</el-button>
    </el-tab-pane>
  </el-tabs>
</el-form>
  </el-card>
  <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%">
 <img  :src="previewUrl" alt="" class="previewImg" />
</el-dialog>
</div>
</template>
<script>
import _ from 'lodash'
export default {
  data () {
    return {
      activeIndex: 0,
      tabPosition: 'left',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      addFormRef: [],
      cateList: [],
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      manyTableData: [],
      onlyTableData: [],
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      headObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewUrl: '',
      previewVisible: false
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败')
      }
      this.cateList = res.data
      console.log(this.cateList)
    },
    handleChange () {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      console.log(this.addForm.goods_cat)
    },
    beforeTabsLeave (activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先正确的选择商品分类')
        return false
      }
    },
    async tabClicked () {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'many' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数失败')
        }
        res.data.forEach(item => {
          item.attr_vals = item.attr_vals === 0 ? [] : item.attr_vals.trim().split(/\s+/)
        })
        this.manyTableData = res.data
        console.log(this.manyTableData)
      }
      if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'only' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数失败')
        }
        // res.data.forEach(item => {
        //   item.attr_vals = item.attr_vals === 0 ? [] : item.attr_vals.trim().split(/\s+/)
        // })
        this.onlyTableData = res.data
        console.log(this.onlyTableData)
      }
    },
    handleSuccess (response) {
      console.log(response)
      const picInfo = {
        pic: response.data.tmp_path
      }
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    handlePreview (file) {
      this.previewUrl = file.response.data.url
      this.previewVisible = true
    },
    handleRemove (file) {
      const filepath = file.response.data.tmp_path

      const i = this.addForm.pics.findIndex(x => x.pic === filepath)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    add () {
      this.$refs.addFormRef.validate(
        async valid => {
          if (!valid) {
            return this.$message.error('请填写必要的表单项')
          }
          const form = _.cloneDeep(this.addForm)
          form.goods_cat = form.goods_cat.join(',')
          this.manyTableData.forEach(
            item => {
              const newInfo = {
                attr_id: item.attr_id,
                attr_vals: item.attr_vals.join(' ')
              }
              this.addForm.attrs.push(newInfo)
            }
          )
          this.onlyTableData.forEach(
            item => {
              const newInfo = {
                attr_id: item.attr_id,
                attr_vals: item.attr_vals
              }
              this.addForm.attrs.push(newInfo)
            }
          )
          form.attrs = this.addForm.attrs
          console.log(form)
          const { data: res } = await this.$http.post('/goods', form)
          console.log(res.meta.status)
          if (res.meta.status !== 201) {
            return this.$message.error('添加商品失败')
          }
          this.$message.success('添加商品成功')
          this.$router.push('/goods')
        }
      )
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>
<style lang="less" scoped>
.el-steps{
    margin: 15px 0;
}
.el-step__title{
    font-size: 13px !important;
}
.el-checkbox{
    margin: 0 10px 0 0 !important;
}
.previewImg{
  width: 100%;
}
.btnAdd{
  margin-top: 15px;
}
</style>
